I was on the other end of this one this spring. My first sharpenable broadheads that I'd gone over and over and over on a stone. I went over to a friend's house, a guy who has been shooting trad since before the sun was invented, to shoot into his 3D targets. First thing he does is pull one of my arrows out and feels the broad head. Didn't say a word, but there was that bob of an eyebrow that if you pay close attention to things you can't help but notice and him holding a "sharpened" broadhead like it was a rock. Didn't say a word. I was embarrassed, but more than that, I got the message, and it sent me back to the TG search mode, videos, Murray Carter, a file, stones and strop. Next time he felt my hunting broadheads in September there wasn't a flicker of recognition. Complete poker face. Just verrrrrry carefully got his fingers off that Terminator and put the arrow back in my brand new Great Northern taking the time to carefully line up the blades to the slits. When you know you know but you don't always know when you don't. Sometimes we need help with that.
It wasn't comfortable getting the message but I'm glad I did when I did.
I say whisper. If he's listening he'll hear it. And if he's not, yelling won't do any good.